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Citation |
Mesman J, Alink LRA, van Zeijl J, Stolk MN, Bakermans-Kranenburg MJ, van Ijzendoorn MH, Juffer F, Koot HM. Aggressive Behav. 2008; 34(5): 539-552. |
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Affiliation |
Centre for Child and Family Studies, Leiden University, Leiden, The Netherlands. mesmanj@fsw.leidenuniv.nl |
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Copyright |
(Copyright © 2008, International Society for Research on Aggression, Publisher John Wiley and Sons) |
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DOI |
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PMID |
18498138 |
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Abstract |
We investigated the reliability and (convergent and discriminant) validity of an observational measure of physical aggression in toddlers and preschoolers, originally developed by Keenan and Shaw [1994]. The observation instrument is based on a developmental definition of aggression. Physical aggression was observed twice in a laboratory setting, the first time when children were 1-3 years old, and again 1 year later. Observed physical aggression was significantly related to concurrent mother-rated physical aggression for 2- to 4-year-olds, but not to maternal ratings of nonaggressive externalizing problems, indicating the measure's discriminant validity. However, we did not find significant 1-year stability of observed physical aggression in any of the age groups, whereas mother-rated physical aggression was significantly stable for all ages. The observational measure shows promise, but may have assessed state rather than trait aggression in our study. Language: en |